Your hypothesis that when seventh lord is placed in 8th house(second
house from seventh house)cant be bad.
There are some principles in Parasara astrology for which no logic applied.
You see 1.Twelfth house placement is bad.But 12th lord is not bad.
2.Guru owning kendra house is bad.
If she has got any health problems,she has to follow holistic healing
method.It is just like penance in another form to reduce evil of