Angioplasty in ITP patient. In her case!

I am from Bangalore and writing to seek opinion on my mother's case history. She is a patient of low platelet count from last 21 years. She had gone through Angiogram due to chest pain, she was feeling while walking after taking food. Angiogram taken at Sakra Hospital in Bangalore showed “Proximal RCA 100% occluded. Distal RCA filling retrogradely through left coronary collaterals”. As RCA filling retrogradely through left coronary collaterals, Cardiologist suggested either to do Angioplasty or continue with these medicines: 1. Aspirin 2. Clopidogrel (75 mg) She had taken Aspirin and Clopidogrel (75 mg) for around 20 days, from Angiogram and since then her platelet count is remaining low. We had stopped these medicines after taking consultation from Hematologist 3 months back, as these medicines are lowering her platelet count. After taking steroid for last 1.5 months, her both legs have swelled much. Please advice whether its possible to do Angioplasty in her case