Hi - welcome to the GMB. Regret to say that members here aren't professional antiques/vintage appraisers, so unable to offer any indication of value for your Aunt's glass - as you can imagine, values are dependent on a variety of personal reasons, quality and age of the glass, and age is not always something that can be achieved with certainty by looking at the screen alone.
The age of these pieces may depend on your knowledge of when you Aunt is known to have visited eastern Europe - if she holidayed there c. 1850, then yes this glass would have a lot more interest than, for example some time during the last few decades

These pieces are typical, in appearance, of glass described as having a 'flashed' colouring - red was possibly the most common colour, followed by amber, then blue, green and violet - and decoration on these is also typical - floral arabesques, buildings of historic interest, grape and vine - also, though I don't see them here - images of stags and other hunting references.
Flashing was/is an economical means of colouring much domestic and tourist glass, with the colouring ground away to create the design, and is known very much as a Bohemian/Czech/German speciality - Egermanm (Bohemia) is the name that most people associate with this type of glass.
Regret to say that it's nigh on impossible you will locate the maker/origin of these pieces, unless your Aunt provided provenance/attribution - they are usually fairly common in continental Europe, and age wise they are no doubt still being made - so take your pick - c. 1850 to present, though wear might provide some indication, and in view of your comments then Germany sounds a safe bet. Have a look on ebay, you should see a lot of this type of glass ware, and it might give you an idea of value, and help to suggest whether you donate or sell.
Sorry this is really unhelpful - your pieces are a common type of continental European tourist glass ware, and not sufficiently specific with which to pin on a particular maker - but, they are attractive, show well and are a momento of your Aunt.
