Question: This is a followup to my previous question:
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History of diagnosis & treatment:
My Mom is 53 years old , 72 kg, she was diagnosed with Colo-Rectal cancer Stage III a year and half back (in., Aug-2011). Her Sugar and BP levels are normal. She underwent Chemotherapy through IV - 5-fluorouracil (5-FU) using port a XXXXXXX The 6 cycles of Chemo completed in April 2012. Now that her blood count is quite normal 10.2, the CEA taken 3 months back read 2.5 and the side effects of the treatment have also been reversing.

since XXXXXXX this year, she had post menopause bleeding and on diagnosis, we came to know that there was recurrence in the pelvic region. I have attached the PET scan report. Our doctor advised us to have a surgery done to remove the uterus and then go in for a surgery, but on a second opinion from a different oncologist, we were advised not to go for it as it had spread quite vulnerably and the patient may become more weak. Now this second opinion suggests us to go in for a palliative chemotherapy using drugs - IRINOTECAN & AVASTIN, which could possibly shrink the tumour and on observation for a few cycles the patient can be exposed to targeted chemotherapy.

We are really worried and confused how to go about it now, since both are different approaches. We wouldnt want to delay the treatment as the patient although is normal, is becoming symptomatic. She has severe cough. Xray of the chest and abdomen reports shows pleural effusion and colapse of the right lung.
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Now:

We have Started off with her Chemo 1st Cycle using drugs: IRINOTECAN & AVASTIN, (since she was already exposed to oxaliplatin, 5FU, leucovorin & capecitabine during the chemo last year) last monday and she is getting better. She had vaginal bleeding during 1st cycle and with course of time, it has been reducing.
I have two questios now:

1. Can you please tell me if the vaginal bleeding is quite normal since the tumor is located across the uters?

2.Xray of the chest taken before the Chemo showed pleural effusion & collapse of the right lung. The left lung was normal. Now that her cough has settled and swelling in the upper abdomen region has reduced (after the 1st Cycle) .Doctor has advised for an Ultra sound only before the next cycle. Can you please also tell me if this a good sign that the effusion has come down? Is there a way possible for us to fully control the pleural effusion?

Thanks in Advance!