My mom might have bipolar??

My mom's personality changes drastically. She said she feels reborn but I am a little worried that this is manic phase of bipolar. She used to be a timid, careful, and indoor person. Recently, she starts to make some bold purchases such as houses and expensive supplements. She didn't inform us about those decisions until we got the mails. Also, she is a lot more active in social activities and she travels constantly to another city to meet with her friends. She is also very active on social media now. Sometimes she posts long stories about her life at 4am. She just got out of a bad depression, initially, we were happy about her positivity, but now we are extremely worried. We kindly suggest her consulting a professional but she gets angry that we assume she has a mental problem and now she hates all of us. I am coming to this thread to hear related stories and suggestions on my mom's conditions