Alexa has a long way to go before she achieves the level of a pre-kindergartner child in language skills. She still gets über confused. I wouldn't use that word "über" with her though as you might have an Uber driver come to your house expecting to drive you someplace.
Something I find really annoying is that you will have trouble with her and turning on/off lights if you use the word "light" in the names for multiple devices. For example, name your LED bulbs something like "Living Room Light", "Bedroom Light", "Hallway Light", and "Bathroom Light". If you do, you will likely encounter her confusion on many occasions as she pauses, thinks, then asks for clarification of which "... Light" to turn on/off. The word "Room" is another bad choice if used for multiple Group names like "Living Room", "Bedroom", "Bathroom", etc. She will definitely get confused if you use the same basic name for a Group and a Device. For example, have the device "Bath Light" assigned to the Group "Bathroom". The command, "Turn on Bath Light" should only turn on the one device named "Bath Light", but it will sometimes result in all devices within the Group "Bathroom" being turned on. So they have a long ways to go to get that sorted out in some logical manner. Trouble is they often get close to resolving many issues, but then they make other changes and the problems return, sometimes worse than they were before.