Alimta, catheter, fluid overload - 1290213

Mom's chemo was cancelled last week as she looked and felt terrible. She was sent to the pulmonary specialist who did a thoracentesis (second in less than a month) and drew 700 ml of "bloody" fluid. He suggested a catheter (feedback?) instead of pleurodesis which he didn't think would work as it has been 5 1/2 years since mom's cancer diagnosis and he felt the pleural membrane had thickened to stick together with the talc procedure.
The onc told me yet again that the hospital showed mom as having CHF and she could not give mom chemo but asked me to consider palliative care. She wants to meet with us in two weeks to discuss treatment options. Mom's stat chest x-ray showed no fluid but the pulmonologist saw it on the ultrasound. Last January when mom was hospitalized with fluid overload, the onc had told me to contact her right away and that she would start Alimta as mom's fluid overload was malignant pleural effusion. This year, onc insists it is CHF. We had an echo study done 10 days ago, mom's ejection factor is 60% which is normal according to the cardiologist. The pulmonologist started off by saying mom has CHF but then read the echo report and after the thoracentesis, wrote down malignant pleural effusion. He did say we need mom's expansion rate as well. Her BNP numbers are normal.
I have requested mom's medical reports dating to cancer diagnosis as the onc told me I should let the onc make the decisions and not play doctor. Mom has tolerated Alimta very well since 2011 and I am not sure why this sudden reluctance to treat her. While I understand old people presenting to the hospital with fluid overload need to have pneumonia and CHF ruled out (as hers was), the cancer diagnosis is written all over her medical report and she has been treated and responded marvelously to Alimta since 2011. Requesting a cardio consult to ask about the expansion rate but want to go into the meeting with the onc fully prepared. Any suggestions will be gratefully appreciated.