Could she see herself as a kind of Pole or had anything to do with Polish life?
Some of the Lithuanian gentry who did not speak Lithuanian decided to learn it later on since they ragarded themselves Lithuanian rather than Polish. Their children were not taught Polish.
Thomas Venclova, a Lithuanian writer, learned Polish himself late in his childhood because he was always intrigued what his mother talked about with his sister since they used Polish, their first language, between themselves every time they wanted little Thomas not to comprehend them. Thomas now speaks Polish like a native speaker.