All 3 Uses

however
in
Like Water for Chocolate
(Edited)

Then there was trouble, however, when the animals had to be taken apart to fry the sausage.
Chpt 1

however = though (used to connect contrasting ideas)
She could move them however she pleased, yet she didn't know what to do with them, other than knitting.
Chpt 6 *

however = in whatever way
However, hot chocolate made with water is more digestible than that made with milk.
Chpt 9 *

however = though (used to connect contrasting ideas)

Definitions:

(1) (however as in: However, complications may...)
though (or another expression that connects contrasting ideas)

Based on idea 1 we might not expect idea 2, but this is a way of saying that even though idea 1 exists, we still have idea 2. Synonyms include in spite of that, despite that, nevertheless, nonetheless, on the other hand, in contrast and but.
(2) (however as in: However much she tried...)
to whatever degree (regardless of how much; or whatever unspecified amount)
(3) (however as in: However you do it, get it done!)
in whatever way
(4) (meaning too rare to warrant focus)
Much more rarely (and arguably incorrectly), however can be used to intensify the word how, as when one says "However did you find her?" Grammarians would suggest using two words for that usage: "How ever did you find her?"