You’ve mentioned your mothers age as 45 , also
LDL level is high but that does not directly mean she has blockages but at risk of having so if not controlled adequately
Coming to last part of your question, if you need a genuine guidance and not a “CUSTOMER SERVICE” (according to you) then we need to consult her and listen to her complaints rather than vaguely mentioning chest pain and snoring !
All these complaints when clinically heard by a doctor directly from the patients with further questioning is more reliable and accurate than this !!
Tc
Next Steps
Consult genuinely !!